# 作业要求：下述所有代码画图以及分析代码执行流程
# 1、以定义阶段为准，先画出名称空间的嵌套关系图
# 2、然后找到调用函数的位置，写出函数调用时代码的执行过程，涉及到名字的查找时，参照1中画好
#    的嵌套图，标明查找顺序，一层一层直到找到位置


# ===================题目一===================
# input=333
# def func():
#     input=444
# func()
# print(input)

# ===================题目二===================
# def func():
#     print(x)
# x=111
#
# func()


# ===================题目三===================
# x=1
# def func():
#    print(x)
#
#
# def foo():
#     x=222
#     func()
#
# foo()

# ===================题目四===================
# input=111
# def f1():
#     def f2():
#         # input=333
#         print(input)
#     input=222
#
#     f2()
#
# f1()

# ===================题目五===================
# x=111
# def func():
#     print(x) #
#     x=222
#
# func()


# ===================题目六===================
# x=111
#
# def foo():
#     print(x,)
#
# def bar():
#     print(x)
#
# foo()  # 111,
# bar()  # 111

# ===================题目七===================
# x=1
# def func2():
#     func1()
#
# x=2
# def func1():
#     print(x)
#
# x=3
#
# func2()

# ===================题目八===================
# 1、如下全局变量记录了当前登录用户，编写登录功能，一旦用户登录成功，则将全局变量赋值为当前登录的用户名
# login_user=None
# 2、针对之前编写的查询余额的功能，添加额外的逻辑：如果用户没有登录，则先执行登录功能

x=111
def func():
    print(x) #
    x=222

func()




